title: Position changes and their physiological consequences.
mesh_terms: D000222:Adaptation, Physiological; D006801:Humans; D007384:Intermittent Positive-Pressure Breathing; D008171:Lung Diseases / Q000503:physiopathology; D008946:Mitral Valve Stenosis / Q000503:physiopathology; D009203:Myocardial Infarction / Q000503:physiopathology; D011187:Posture; D012119:Respiration; D012131:Respiratory Insufficiency / Q000503:physiopathology; D014692:Ventilation-Perfusion Ratio